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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Birthing process (termination of gestation)
Sperm survival specs
humans: stress level vs sperm
Parturition
mare gestation
2. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
dairy cattle pregnancy check
Dairy Cattle Lactation (standard)
Size of cow in relation to the amount of milk produced
3. What makes the milk flow through the mammary glands?
elastrator
penis and prepuce observation (BSE)
Culls bulls earlier (2 reasons)
Blood
4. 14-19 (17) days
burdizzo
what has to happen for males for copulation to occur
ewe estrus cycle
Dairy Cattle Gestation
5. Microscopic - make sure not sterile - very few bulls are actually tested
semen evaluation (BSE)
reason for seasonal breeding periods
castration
scrotal circumference (BSE)
6. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Follical Stimulating in males
eminal vesicles
mastitis
cow ovulation
7. 4-6 days
mare estrus
testis (gonads)
Culls bulls earlier (2 reasons)
age and castration
8. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
epididymis: definition - 3 parts - 4 functions
normal presentation of the fetus
functions of progestrone
cow ovulation
9. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
mare ovulation
cow estrus
ewe estrus cycle
10. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
rectal palpation (BSE)
humans: stress level vs sperm
sow ovulation
11. Check feet and legs - look for masculine traits in build such as crest and muscling
effects of BST
1. more cost effective - 2. powdered milk is in excess production
Size of cow in relation to the amount of milk produced
visual evaluation (BSE)
12. Look for infection - split - and rupture of the penis
libido test (BSE)
reasons for castration
penis and prepuce observation (BSE)
mare estrus cycle
13. (LH) stimulates the Leydig cells to produce testosterone
visual evaluation (BSE)
1. more cost effective - 2. powdered milk is in excess production
Dairy Cattle milking schedule
Lutinizing Hormone in males
14. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
functions of progestrone
pelvis
dry-off time in dairy cattle
sow estrus cycle
15. Can survive ~7 days in cow. vast majority <48 hours
polyestrous
scrotum
reasons for castration
Sperm survival specs
16. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
Lutinizing Hormone in males
colostrum
dairy cattle pregnancy check
Dairy calves are removed from cow at birth to...
17. Front feet and head first. (except for hogs and dogs)
stag
Parturition
things to check for in a breeding soundness exam (BSE)
normal presentation of the fetus
18. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
pelvis
Hormones from both the fetus and the mom.
eminal vesicles
what has to happen for males for copulation to occur
19. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
sow gestation
effects of estrogen
purpose of Breeding Soundness Exam (BSE) for males
hormones
20. 10-37 (21) days
Brown Swiss Cow
Dairy Cattle Gestation
mare estrus cycle
Hormones from both the fetus and the mom.
21. Animals which have many estrous periods per year (ex: cow - sow)
cremaster muscle
polyestrous
Dairy calves are removed from cow at birth to...
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
22. Urinary calculi.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
functions of progestrone
Bull's fibro-elastic penis
Brown Swiss Cow
23. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
ewe estrus cycle
semen evaluation (BSE)
eminal vesicles
~1 month
24. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
mare's estrous cycle
sow estrus
monestrous
penis sizes vs delivering methods
25. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
vagina
Sperm growth rate
butterfat
leydid or interstitial cells
26. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Culls bulls earlier (2 reasons)
prostate gland
things to check for in a breeding soundness exam (BSE)
Jersey Cow
27. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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28. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
sigmoid flexure
elastrator
dry-off time in dairy cattle
mare estrus
29. 1-3 days
age and castration
sow estrus
Sperm growth rate
Reasons for gestation length being affected
30. Important 'landmark' during palpation
vagina
reason for seasonal breeding periods
cervix
sertoli cells
31. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
hormones
penis and prepuce observation (BSE)
organs used in spermatogenesis
sow gestation
32. Look for infection - split - and rupture of the penis
accessory sex glands
why does the cow need fat deposits during pregnancy?
penis and prepuce observation (BSE)
effects of estrogen
33. Days which have decreasing daylight hours
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34. 30 hours after estrus begins
cow ovulation
behavioral signs of estrus
Mares
Follical Stimulating in males
35. 19-23 (21) days
seasonally polyestrous
Lutinizing Hormone in males
sow estrus cycle
mare's estrous cycle
36. FEED
normal presentation of the fetus
cow estrus
#1 cost in production
stag
37. Sperm production
Size of cow in relation to the amount of milk produced
humans: stress level vs sperm
spermatogenesis
Grading choice
38. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
castration
Culls bulls earlier (2 reasons)
Lutinizing Hormone in males
39. Animal which has been castrated after puberty
stag
semen evaluation (BSE)
ewe's estrous cycle
Bull's fibro-elastic penis
40. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
prostate gland
sow gestation
normal presentation of the fetus
purpose of Breeding Soundness Exam (BSE) for males
41. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
4 major reasons for culling dairy cows
effects of estrogen
Dairy calves are removed from cow at birth to...
Size of cow in relation to the amount of milk produced
42. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
~1 month
rectal palpation (BSE)
cowper's gland
age and castration
43. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
Follical Stimulating in females
Holstein Cow
burdizzo
mare estrus
44. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
libido test (BSE)
penis sizes vs delivering methods
oviducts
Grading choice
45. 30-38 hours after estrus cycle begins
mare gestation
sow ovulation
functions of progestrone
rectal palpation (BSE)
46. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
libido test (BSE)
dry-off time in dairy cattle
penis proper
penis sizes vs delivering methods
47. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
prostaglandin
penis proper
sow gestation
rectal palpation (BSE)
48. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
mare's estrous cycle
sigmoid flexure
Holstein Cow
49. Way to know everything is alright with the breeding male
Mares
purpose of Breeding Soundness Exam (BSE) for males
penis proper
normal presentation of the fetus
50. Sperm production
6-8 weeks
what has to happen for males for copulation to occur
hormones
spermatogenesis